EP0357155B1 - Articles de prothèse possédant la propiété de selier aux os - Google Patents

Articles de prothèse possédant la propiété de selier aux os Download PDF

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Publication number
EP0357155B1
EP0357155B1 EP89202226A EP89202226A EP0357155B1 EP 0357155 B1 EP0357155 B1 EP 0357155B1 EP 89202226 A EP89202226 A EP 89202226A EP 89202226 A EP89202226 A EP 89202226A EP 0357155 B1 EP0357155 B1 EP 0357155B1
Authority
EP
European Patent Office
Prior art keywords
ester units
chain
bone
molecular weight
chain ester
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89202226A
Other languages
German (de)
English (en)
Other versions
EP0357155A1 (fr
Inventor
Dirkjan Bakker
Johannes Jacobus Grote
Clemens Antoni Van Blitterswijk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isotis NV
Original Assignee
HC Implants BV
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Filing date
Publication date
Application filed by HC Implants BV filed Critical HC Implants BV
Priority to AT8989202226T priority Critical patent/ATE105490T1/de
Publication of EP0357155A1 publication Critical patent/EP0357155A1/fr
Application granted granted Critical
Publication of EP0357155B1 publication Critical patent/EP0357155B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/56—Porous materials, e.g. foams or sponges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/50—Preparations specially adapted for dental root treatment
    • A61K6/58—Preparations specially adapted for dental root treatment specially adapted for dental implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
    • A61K6/891—Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
    • A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/66—Polyesters containing oxygen in the form of ether groups
    • C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/672—Dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
    • C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
    • C08G63/6854—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/6856—Dicarboxylic acids and dihydroxy compounds

Definitions

  • the invention relates to prosthetic devices having bone-binding properties which are made of specific thermoplastic segmented copolymers which are compatible with biological materials. Further the invention relates to the therapeutic use of such prosthetic devices.
  • the ceramic "hydroxyapatite” is bioactive as concerns bonding to bone (C.A. van Blitterswijk et al., "Bioreactions at the tissue/hydroxyapatite interface", Biomaterials 6 , pages 243-251 (1985).
  • the so-called “lamina limitans”-like interface (LL-interface) at the interface between hydroxyapatite and bone which anorganic part mainly consists of hydroxyapatite, is characteristic for the chemical bond between both materials. More in particular said chemical bond is thought to be based on a bilateral crystal growth.
  • the sintered hydroxyapatite belongs to the ceramics which are non-elastic materials. For that reason considerable research has been carried out for developing an elastic material having substantially the same chemical bone-bonding properties as hydroxyapatite.
  • FR-A-2,387,028 relates to prosthetic devices which are composed of an inner load bearing functional component and an outer porous coating of a biomedical thermoplast e.g. a thermoplastic polyester.
  • the thermoplastic coating is provided in regions where long-term bone-fixation is desired by tissue ingrowth.
  • the materials of the thermoplastic coating must have the following properties:
  • prosthetic devices made of a segmented thermoplastic copolyester consisting essentially of a multiplicity of recurring long-chain ester units and short-chain ester units, said long-chain ester units comprising from 30-75% by weight of the copolyester and being represented by the formula -OLO-CO-R-CO- and said short-chain ester units being represented by the formula -OEO-CO-R-CO- where
  • the prosthetic devices according to the invention are made of thermoplastic copolymers wherein the poly(oxyethylene) glycol-units have a molecular weight of about 750-1,500 and in particular about 1,000.
  • the symbol E is preferably a 1.2-ethylene or 1.4-butylene group i.e. the short-chain ester units are preferably based on either poly-1.2-ethylene terephthalate or poly-1.4-butylene terephthalate.
  • the surface of the devices according to the invention may or may not comprise macropores.
  • macropores preferably macropores having a diameter in the range of 60-250 ⁇ m and a macroporosity of 30-60%.
  • the copolymers according to the invention do have neither a crystal stoechiometry nor a crystal structure which corresponds to the crystal stoechiometry or crystal structure of hydroxyapatite it is brought to the fore that the bone-bonding process will have a different mechanism compared to the hydroxyapatite-bone-bonding process.
  • the segmented copolymers which are used in the prosthetic devices according to the invention are more or less known from the prior art.
  • copolymers of poly(ethyleneglycol) and bis(beta-hydroxyethyl) terephthalate are disclosed.
  • the average molecular weight of the preferably used poly(ethyleneglycol)-units was about 4,000.
  • Said molecular weight of 4,000 corresponds to the preferred value for the CH2-CH2-O-units as mentioned in column 7, line 2 of said U.S. patent.
  • U.S. patent 3,908,201 discloses a copolymer containing 50% by weight of units derived from poly(ethyleneglycol) of average molecular weight of 600 and 50% by weight of units derived from poly(ethylene terephthalate).
  • Hydantoin-containing segmented copolymers are known from U.S. patent 4,350,806.
  • the reason for the presence of the hydantoin radical in the polyoxyethylene-unit was lain in the reduction of the polyoxyethylene polymer's propensity to crystallize and further provides a chemically reactive side for incorporating other moieties to enhance certain properties. On account of this "foreign" radical it was possible to substantially increase the molecular weight of the polyether-unit.
  • the prosthetic devices according to the invention may be used on several medical areas like
  • the prosthetic devices according to the invention may also be combined with other materials, for instance as a composite material with a.o. hydroxyapatite or polylactic acid as a coating or as a blend with the instance polylactic acid.
  • shape of the prosthetic devices according to the invention may vary considerably, dependent on the application. Examples of shapes are films, plates, screws and filaments, for instance in the form of sutures.
  • the bone-bonding strengths of PEO/PBT (55/45 w/w) comprising poly(ethyleneglycol)-units having an average molecular weight of about 1000 (prepared according to Example 3 of U.S. patent 4,262,114 with the proviso that PEO was used instead of HPEO and the amount of Ionox 330 was 0.5 weight %) are compared with the bone-bonding strengths of hydroxyapatite and tetracalcium phosphate acting as positive controls and with the bonebonding strength of silicone rubber acting as a negative control.
  • implants of 2x2x1.5 mm made of the three above indicated materials were implanted in the tibia of male Wistar-rats (body weight: 300 g).

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Medicinal Chemistry (AREA)
  • Dermatology (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Preparations (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Prostheses (AREA)

Claims (6)

  1. Dispositif prothétique présentant des propriétés de fixation aux os et réalisé en un copolyester thermoplastique segmenté constitué essentiellement d'une multiplicité de motifs répétitifs esters à longue chaîne et esters à courte chaîne, les motifs esters à longue chaîne constituant de 30 à 75 % en poids du copolyester et étant représentés par la formule suivante :



            -OLO-CO-R-CO-



    et les motifs esters à courte chaîne étant représentés par la formule suivante :



            -OEO-CO-R-CO-



    où
    L   dans le motif à longue chaîne est un radical divalent restant après enlèvement des groupes hydroxyles terminaux d'un poly(oxyéthylène)glycol ayant une masse moléculaire moyenne en nombre de 500 à 3.000 ;
    R   est un radical divalent restant après enlèvement des groupes carboxyles d'un acide dicarboxylique ayant une masse moléculaire inférieure à 300 ; et
    E   dans le motif à courte chaîne est un radical alkylène ayant de 2 à 6 atomes de carbone, et éventuellement, au moins une partie de la surface du dispositif comprend des macropores ayant un diamètre d'environ 50 à 500 µm et une macroporosité de 10 à 90 %.
  2. Dispositif prothétique selon la revendication 1, réalisé en un copolyester thermoplastique, dans lequel le motif poly(oxyéthylène)glycol L a une masse moléculaire moyenne de 750 à 1.500.
  3. Dispositif prothétique selon la revendication 1, réalisé en un copolyester thermoplastique, dans lequel le motif poly(oxyéthylène)glycol L a une masse moléculaire moyenne d'environ 1.000.
  4. Dispositif prothétique selon la revendication 1, réalisé en un copolyester thermoplastique, dans lequel la presque totalité de l'acide dicarboxylique est l'acide téréphtalique.
  5. Dispositif prothétique selon la revendication 1, réalisé en un copolyester thermoplastique, dans lequel le groupe alkylène ayant de 2 à 6 atomes de carbone est un groupe éthylène en C1,2 ou un groupe butylène en C1,4.
  6. Dispositif prothétique selon la revendication 1, dans lequel au moins une partie de la surface du dispositif comprend des macropores ayant un diamètre de 60 à 250 µm et une macroporosité de 30 à 60 %.
EP89202226A 1988-09-02 1989-09-01 Articles de prothèse possédant la propiété de selier aux os Expired - Lifetime EP0357155B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989202226T ATE105490T1 (de) 1988-09-02 1989-09-01 Prothesen mit knochenbindenden eigenschaften.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802178A NL8802178A (nl) 1988-09-02 1988-09-02 Prothetische voortbrengsels met botbindende eigenschappen.
NL8802178 1988-09-02

Publications (2)

Publication Number Publication Date
EP0357155A1 EP0357155A1 (fr) 1990-03-07
EP0357155B1 true EP0357155B1 (fr) 1994-05-11

Family

ID=19852852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202226A Expired - Lifetime EP0357155B1 (fr) 1988-09-02 1989-09-01 Articles de prothèse possédant la propiété de selier aux os

Country Status (7)

Country Link
EP (1) EP0357155B1 (fr)
KR (1) KR0140538B1 (fr)
AT (1) ATE105490T1 (fr)
CA (1) CA1341282C (fr)
DE (1) DE68915229T2 (fr)
ES (1) ES2056195T3 (fr)
NL (1) NL8802178A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902237A (nl) * 1989-09-06 1991-04-02 Hc Implants Bv Kunsthuid.
US5081161A (en) * 1990-06-15 1992-01-14 E. I. Du Pont De Nemours And Company Process for making shaped articles of a thermoplastic resin having a microcellular structure
EP0464827B1 (fr) * 1990-07-05 1995-04-19 Matsushita Electric Industrial Co., Ltd. Support d'enregistrement magnétique et sa méthode de fabrication
ES2178102T3 (es) 1997-07-16 2002-12-16 Isotis Nv Dispositivo para la generacion de tejido oseo, que comprende un termoplastico de copoliester biodegradable y celulas cultivadas.
EP0891783B1 (fr) * 1997-07-16 2002-06-12 IsoTis N.V. Dispositif pour la régénération osseuse consistant d'un copolyester thermoplastique biodégradable et de cellules cultivées
JP2000167039A (ja) 1998-11-30 2000-06-20 Isotis Bv 人造皮膚
EP1005873B1 (fr) * 1998-11-30 2003-04-09 IsoTis N.V. Peau artificielle
US6656489B1 (en) * 1999-02-10 2003-12-02 Isotis N.V. Scaffold for tissue engineering cartilage having outer surface layers of copolymer and ceramic material
EP1027897B1 (fr) * 1999-02-10 2005-04-13 IsoTis N.V. Systèmes de régénération du tissus de cartilage
EP1038538A1 (fr) * 1999-03-19 2000-09-27 IsoTis B.V. Régénération de tissu musculaire
ATE252920T1 (de) * 1999-08-06 2003-11-15 Isotis Nv Festigungsvorrichtung
ATE487504T1 (de) 2001-01-02 2010-11-15 Advanced Ceramics Res Inc Zusammensetzungen und verfahren für biomedizinische anwendungen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340091A (en) * 1975-05-07 1982-07-20 Albany International Corp. Elastomeric sheet materials for heart valve and other prosthetic implants
US4164794A (en) * 1977-04-14 1979-08-21 Union Carbide Corporation Prosthetic devices having coatings of selected porous bioengineering thermoplastics
US4350806A (en) * 1981-09-28 1982-09-21 Akzona Incorporated Biocompatible copolymers
JPS62295666A (ja) * 1986-06-16 1987-12-23 呉羽化学工業株式会社 連続二次元多孔型インプラント材及びその製造法
DE3644588C1 (de) * 1986-12-27 1988-03-10 Ethicon Gmbh Implantat und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
EP0357155A1 (fr) 1990-03-07
KR0140538B1 (ko) 1998-06-15
KR900004311A (ko) 1990-04-12
DE68915229D1 (de) 1994-06-16
CA1341282C (fr) 2001-08-07
NL8802178A (nl) 1990-04-02
ES2056195T3 (es) 1994-10-01
ATE105490T1 (de) 1994-05-15
DE68915229T2 (de) 1994-11-17

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